John burti



@nitzh tstes strut @Hire Letters Patent No. 80,594, datedAugust 4, 1868.v

IMPROVEMENT IN SKBIN4STTERS FOR A XLES. I

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TO ALL WHOM IT MAY COCER:

Be it known that I, JQHN BURT, of Sturgis, in the State of Michigan, have invented certain new and useful Improvements in .Thimble-Skein Setters; and I d o herebydeclare that thefollowing is a full, clear, and-exact description of the same, reference being had `to the annexedV drawing, and to the letters of reference marked thereon, in which-'- Figure 1 is a side elevation.

Figure 2, an end view of the crank-arrangement.

Figure 3, a perspective of the op'en nut, and

`Figure 4a view of the frame-wheel. l,

The object of this inventi'onis to give any required taper to the wooden arm of an aide,v and th'e nature of it consists, first, in the employment of an inclined ways, hinged at both ends, substantially in the vmanner hereinafter described; second, in the employment of a reviolving screw-shaft, in combination with theslliding knifel block; also, -in the employment and combinationl of such other devices-as will be hereafter setforthl To enable others skilled in the art to make and use my invention, I will now describe its construction-and operation. l

A represents a wheel, with a `step formed on it, or, which would be the same thing in effect, a smaller wheel secured toit. Upon thisstep or smaller wheel revolves the frame-wheel B. The mode of constructing this wheel is shown in iig.`4. d is a stationary cog-wheel, secured to Vthe step of wheel A, thus lconning the frame-wheel in the position indicated in fig. 1. l Y 'f D represents the crank, which is provided with a square hole, suiiiciently ieu-ge for one end of the ways g g and the rocking-box a torest in. This rocking-box i's pivoted between the-ways y g, as fully shown in iig. 2. The opposite end ofthe ways is pivoted between theprojections pnfi'gzamewheel B. The lower end ofthe crank, D, is provided with the slide h, for the purpose o f regulating the degree of taper designed to be given vto the arm otthe'axle. This feature will be new fully understood hereafter. v

E represents the knife-block, to which is attached the adjustable knife z'. j Said knife should be curved, as seen in iig. l. 'The block E slides upon the inclined ways g g, Vand is confined between them by means of slots cut in its sides.' l l Y b represents a screw-shaft, one end of which enters the rockiug-box a; the other passes through the head of ways y g, and is securely attached to the planet-wheelv 7c. This wheel're'volves in and around the cog-wheel d.

c represents a divided nut. Said nut is hinged or pivoted, as seen in iig. 3, and is provided with the clamp o, for keepingit in gear with screw-shaft b while the machine is in operation. This nut is secured to the knifeblock inthe position indicated in 1. l v 4 It should be observed that the screwshaft passes loosclythrough the knife-block, the object ot which will be more fully appreciated hereafter. I

n n represent lugs, secured to the wheel d. vSaidlugs are provided with set-scpews t t, for the purpose of firmly holding 'the axle. These lugs may be provided with hinges, which, in some respects, would be preferable to the mode of fastening represented in the drawings.

The opera-tion of my machine is as follows: `The axle is adjusted in the-hole throughI the centreof wheels .A B d, and is secured by means of a set-screw through the slide h, and the screws in lugs 1t n. .The slide It is then so adjusted asto give the desired taper to the arm, the knife-block is pushedoack against the crank, and the divided nut closed and fastened bythe clamp. Motion is now-given to the crank, causing the knife 4to revolve around the arm. The motion ofthe crank also revolves the `planet-wheel, which turns the screw-shaft, and gradually forces the knife-block from the lower to the upper end of the arm, thus giving a uniform slant to it. By opening the divided nut, and sliding the knife-block back into its proper place, the machine is again ready for work.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The employment of the slide h in crank, D, for' adjusting the arm, substantially as and for the purpose specified'.

2. The ways g g, when hinged or pivoted at both ends, substantially as set forth, for the purpose ofnccommodating them to the set of the arm.

3. Providing the crank, D, with rocking-box a, and attaching screw-shaft b thereto, lsubstantially as described.A

4. Finally, wheel B, constructed substautilly as set forth, in combination with hinged or pivot'ed ways l g g, screw-shaft b, knife-block E, divided nut e, and crank, D, for the purpose described.

' JOHN BURT.

Witnesses:

T. H. ALEXANDER, JOHN A. ELLIS. 

